CN201884250U - Hydraulic diaphragm metering pump with diaphragm protection function - Google Patents
Hydraulic diaphragm metering pump with diaphragm protection function Download PDFInfo
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- CN201884250U CN201884250U CN2010202195088U CN201020219508U CN201884250U CN 201884250 U CN201884250 U CN 201884250U CN 2010202195088 U CN2010202195088 U CN 2010202195088U CN 201020219508 U CN201020219508 U CN 201020219508U CN 201884250 U CN201884250 U CN 201884250U
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- cuticula
- pump head
- valve pocket
- spool
- diaphragm
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Abstract
The utility model discloses a hydraulic diaphragm metering pump with a diaphragm protection function, which comprises a pump head; the pump head is provided with a liquid inlet, a liquid outlet, a medium channel, a connecting hole and a medium cavity which are communicated with to form a T-shaped cavity; the pump head is also provided with a diaphragm protection assembly which is built in the pump head; and all parts of the diaphragm protection assembly are connected together. The pump head of the hydraulic diaphragm metering pump with the diaphragm protection function is provided with the built-in diaphragm protection assembly, compared with the pump head in the prior art, the sealing tightness is obviously improved; the diaphragm protection assembly is simple in structure, all the parts of the diaphragm protection assembly are connected into a whole and can keep the whole body under any state, then the position relation and connection relation of all the parts of the diaphragm protection assembly are very stable, and further the whole diaphragm protection assembly is enabled to be stable in service behaviour.
Description
Technical field
The utility model relates to a kind of metering pump, relates in particular to the Hydraulic Diaphragm Metering Pump with cuticula function.
Background technique
Metering pump also claims metering pump or dosing pump, and it belongs to reciprocating volumetric pump.In the prior art, metering pump is classified according to the overcurrent mode to be had: plunger, piston type; The mechanical diaphragm formula; Hydraulic diaphragm.Hydraulic Diaphragm Metering Pump is made up of electric motor drive mechanism, hydraulic system etc., and hydraulic system is made up of parts such as barrier film, pump heads.Pump head is provided with liquid entering hole, liquid outlet, medium channel, draining hole, media cavity; Barrier film is connected this place that pump head is provided with media cavity.Hydraulic Diaphragm Metering Pump exists some to use defective in the prior art: diaphragm is under the high pressure operating mode, after the part of the corresponding media cavity of pump head contacts, the corresponding pump head draining hole of membrane surface place can produce protruding plastic deformation, influences the usability and the life-span of diaphragm, even the moment breakage; Diaphragm is under improper operating mode, and as instantaneous superpressure, liquid outlet obstruction etc., the corresponding pump head media cavity of diaphragm draining hole place can produce and shear breakage, causes the metering pump fault.
For solving above-mentioned use defective, prior art provides a kind of hydraulic diaphragm metering pump that can protect diaphragm, for example on June 21st, 2006 disclosed Chinese patent, publication number is CN1789711A, patent name is the patent with hydraulic diaphragm metering pump of front-located mode cuticula plate structure, this metering pump has a guide rod through hole between the medium channel of pump head and media cavity, movable in the guide rod through hole guide rod is installed; Be connected with a cuticula plate at guide rod by lamina membranacea one end, the other end of guide rod passes medium channel, and is movably connected on the pump head by sealing screw; Pump head is provided with the depression counterbore that is suitable for cuticula plate shape, thickness at cuticula plate place, in the depression counterbore, is provided with a through hole that connects medium channel and media cavity at least.Though this technology plays the function of protection diaphragm; but because sealing screw is to be installed on the pump head from the outside; need on pump head, open a tapped hole that is used to install sealing screw; this tapped hole makes the sealability of pump head reduce greatly, very easily occurs the phenomenon of leaking after long-term the use at the sealing screw place.
Only be connected with spring between guide rod and the sealing screw, guide rod can be subjected to the position-limiting action of spring when sealing screw place direction is moved, but when the guide rod reversing motion, finally only be subjected to stopping of diaphragm, therefore the annexation between guide rod and the sealing screw is very unstable, and guide rod very easily breaks away from from spring.Because an end of guide rod is embedded in spring inner in this structure; Embedded annexation can guarantee that the stroke of guide rod is in normal value between guide rod and the spring; if be connected once more after guide rod and spring break away from and the situation that guide rod can't normally be embedded into spring inner very likely occurs; the stroke of guide rod is just big a lot of than normal value like this; finally cause this cuticula device can not realize protecting the function of diaphragm, greatly reduce the working stability of this cuticula device.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of Hydraulic Diaphragm Metering Pump with cuticula function with pump head of good seal performance, stable work in work.
For solving the problems of the technologies described above, the utility model adopts following technological scheme: this Hydraulic Diaphragm Metering Pump comprises pump head, described pump head is provided with liquid entering hole, liquid outlet, medium channel, attachment hole, media cavity, described liquid entering hole, liquid outlet, medium channel, be communicated with and form the cavity of T shape between attachment hole and the media cavity, also be provided with the cuticula assembly on the described pump head, described cuticula assembly comprises the cuticula spool, the cuticula valve pocket, described cuticula spool one end is column, the other end is planar, the cylindrical end of described cuticula spool is vertically set on flat this end, the cylindrical end inside of described cuticula spool is provided with oil guiding hole, described cuticula spool is flat this end width and is at most the attachment hole width, described cuticula valve pocket is fixedly connected on pump head inside, the link position of described pump head and cuticula valve pocket is positioned at medium channel, the cylindrical end of described cuticula spool is movably connected in the cuticula valve pocket by spring, described cuticula valve pocket inner space is communicated with by the cavity of oil guiding hole with the T shape of pump head, described cuticula valve pocket inside is provided with boss, and the cylindrical end of described cuticula spool is passed boss and jump ring is installed.
Cuticula assembly of the present utility model is positioned at the inside of pump head, and cuticula spool and cuticula valve pocket link together all the time, and the cuticula assembly not only can not influence the original sealability of pump head like this, and service behaviour is more stable.Compared to existing technology, the pump head of the utility model Hydraulic Diaphragm Metering Pump has good seal performance, the advantage of stable work in work.
As of the present utility model preferred, described boss ringwise.The cylindrical end of cuticula spool owing to directly contact between jump ring and the boss, so the boss of employing annular can guarantee to greatest extent that jump ring is evenly stressed, thereby promotes the using effect of jump ring, the working life of prolongation jump ring by the spacing side at boss of jump ring.
As of the present utility model preferred, described pump head is provided with the mounting hole that is used to install the cuticula valve pocket being positioned at the medium channel place, described cuticula valve pocket both sides are provided with engaging lug, described cuticula valve pocket connects pump head inside at the engaging lug place by screw, and an end of described cuticula valve pocket is positioned at mounting hole.This design can be installed the cuticula assembly additional on the basis that does not change the original size of pump head, make this technology have stronger implementation.
As of the present utility model preferred, described cuticula spool comprises attachment post and cuticula plate, fixedlys connected between described attachment post and the cuticula plate, and inside is provided with oil guiding hole on the described attachment post, and described cuticula plate width is at most the attachment hole width.The cuticula spool adopts separate type, is convenient to the production and processing of cuticula spool on the one hand, can select better material for each parts according to use condition on the other hand.
The utility model adopts technique scheme: this pump head with Hydraulic Diaphragm Metering Pump of cuticula function has built-in cuticula assembly, the pump head in compared to existing technology, and the sealing of the pump head of this Hydraulic Diaphragm Metering Pump is significantly increased.The cuticula assembly structure is simple, its each parts are connected as a single entity, can both keep as a whole under any state, the position between each parts of cuticula assembly relation, annexation are all highly stable like this, and then make whole cuticula assembly have stable service behaviour.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further specified.
Fig. 1 is that the pump head that the utlity model has the Hydraulic Diaphragm Metering Pump of cuticula function uses the schematic representation I;
Fig. 2 is that the pump head that the utlity model has the Hydraulic Diaphragm Metering Pump of cuticula function uses the schematic representation II;
Fig. 3 is that the pump head that the utlity model has the Hydraulic Diaphragm Metering Pump of cuticula function uses the schematic representation III.
Embodiment
This Hydraulic Diaphragm Metering Pump with cuticula function is provided with pump head, and as shown in Figure 1, pump head is provided with liquid entering hole 1, liquid outlet 2, medium channel 3, attachment hole 4, media cavity 5.Liquid entering hole 1 and liquid outlet 2 lay respectively at the both sides of pump head, are communicated with by medium channel 3 between liquid entering hole 1 and the liquid outlet 2.Side at pump head is provided with media cavity 5, is connected by attachment hole 4 between this media cavity 5 and the medium channel 3.Thereby be communicated with and form the cavity of T shape between liquid entering hole 1, liquid outlet 2, medium channel 3, attachment hole 4, the media cavity 5.
Also be provided with the cuticula assembly in pump head inside, as shown in Figure 1, the cuticula assembly comprises cuticula spool, cuticula valve pocket 6.The cuticula spool is made up of attachment post 7 and cuticula plate 8, and attachment post 7 is column, and its inside is provided with oil guiding hole 9, and this oil guiding hole 9 is T-shaped, and an opening is positioned at an end of attachment post 7, is provided with two openings at the middle part of attachment post 7.The shape of cross section of cuticula plate 8 and size all shape of cross section and the size with attachment hole 4 are identical; Cuticula plate 8 is round table-like, and an end width is greater than the other end width, and the bigger end of width is plane; The Extreme breadth of cuticula plate 8 is identical with the width of attachment hole 4.The other end of attachment post 7 is connected the home position of this less end of cuticula plate 8 width, and is connected by screw between cuticula plate 8 and the attachment post 7.Cuticula valve pocket 6 is a tubular structure, and its outside is provided with two engaging lugs 10, and engaging lug 10 is provided with screw; Be provided with boss 11 in the inside of cuticula valve pocket 6, boss 11 makes the inner space of cuticula valve pocket 6 be trapezoidal.Attachment post 7 outsides at the cuticula spool are with spring 12, and this side that an end of attachment post 7 passes the boss 11 of cuticula valve pocket 6 and exposes boss 11 is equipped with jump ring 15, thereby cuticula spool and cuticula valve pocket 6 are linked together.Spring 12 is enclosed within on the attachment post 7, and the one end withstands on the boss 11 of cuticula valve pocket 6, and the other end withstands on this less end of width on the cuticula plate 8.
Pump head is provided with mounting hole 13 being positioned at medium channel 3 places, and by after the screw on the engaging lug 10 of its both sides is in pump head, an end of cuticula valve pocket 6 is installed in the mounting hole 13 at cuticula valve pocket 6.The position of mounting hole 13 is just over against attachment hole 4 positions.Under the connection effect of the oil guiding hole 9 of attachment post 7 inside, cuticula valve pocket 6 inner spaces can be communicated with attachment hole 4 by oil guiding hole 9, and then are communicated with the cavity of the T shape of pump head.
As shown in Figure 2, when medium enters media cavity 5, separate between feed liquor rear film 14 and the cuticula plate 8.As shown in Figure 3, when medium was discharged media cavity 5, diaphragm 14 moved to cuticula assembly position.Diaphragm 14 also promotes the cuticula spool and moves together when promoting medium.The cuticula spool is promoted to cuticula valve pocket 6 positions by diaphragm 14 all the time in this process, so spring 12 is compressed; The medium that is positioned at cuticula valve pocket 6 inside is discharged to attachment hole 4 by oil guiding hole 9.Because the size shape of cuticula plate 8 is identical with attachment hole 4 size shape, therefore, cuticula plate 8 can enter in the attachment hole 4.When cuticula plate 8 moves to its width the plane of this end and media cavity 5 place faces maintains an equal level more greatly; cuticula plate 8 is blocked by cuticula valve pocket 6; as shown in Figure 3; this moment, whole diaphragm 14 was subjected to the support of pump head and cuticula plate 8 at this face towards media cavity 5 positions; diaphragm 14 is protected thus, avoids it that deformation takes place.
Cuticula assembly in this Hydraulic Diaphragm Metering Pump is installed in pump head inside, has avoided perforate on pump head, thereby guarantees the integrality of pump head, and compared to existing technology, the sealability of pump head improves greatly.Become one after the assembling of cuticula assembly, have stable position relation, annexation between each parts, and then make the cuticula assembly have stable service behaviour.
Claims (4)
1. Hydraulic Diaphragm Metering Pump, this Hydraulic Diaphragm Metering Pump comprises pump head, described pump head is provided with liquid entering hole (1), liquid outlet (2), medium channel (3), attachment hole (4), media cavity (5), described liquid entering hole (1), liquid outlet (2), medium channel (3), be communicated with and form the cavity of T shape between attachment hole (4) and the media cavity (5), also be provided with the cuticula assembly on the described pump head, it is characterized in that: described cuticula assembly comprises the cuticula spool, cuticula valve pocket (6), described cuticula spool one end is column, the other end is planar, the cylindrical end of described cuticula spool is vertically set on flat this end, the cylindrical end inside of described cuticula spool is provided with oil guiding hole (9), described cuticula spool is flat this end width and is at most attachment hole (4) width, described cuticula valve pocket (6) is fixedly connected on pump head inside, the link position of described pump head and cuticula valve pocket (6) is positioned at medium channel (3), the cylindrical end of described cuticula spool is movably connected in the cuticula valve pocket (6) by spring (12), described cuticula valve pocket (6) inner space is communicated with the cavity of the T shape of pump head by oil guiding hole (9), described cuticula valve pocket (6) inside is provided with boss (11), and the cylindrical end of described cuticula spool is passed boss (11) and jump ring (15) is installed.
2. according to the described Hydraulic Diaphragm Metering Pump of claim 1, it is characterized in that: described boss (11) ringwise.
3. according to the described Hydraulic Diaphragm Metering Pump of claim 1, it is characterized in that: described pump head locates to be provided with the mounting hole (13) that is used to install cuticula valve pocket (6) being positioned at medium channel (3), described cuticula valve pocket (6) both sides are provided with engaging lug (10), described cuticula valve pocket (6) is located to connect pump head inside by screw at engaging lug (10), and an end of described cuticula valve pocket (6) is positioned at mounting hole (13).
4. according to the described Hydraulic Diaphragm Metering Pump of claim 1, it is characterized in that: described cuticula spool comprises attachment post (7) and cuticula plate (8), fixedly connected between described attachment post (7) and the cuticula plate (8), described attachment post (7) is gone up inside and is provided with oil guiding hole (9), and described cuticula plate (8) width is at most attachment hole (4) width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195088U CN201884250U (en) | 2010-06-08 | 2010-06-08 | Hydraulic diaphragm metering pump with diaphragm protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202195088U CN201884250U (en) | 2010-06-08 | 2010-06-08 | Hydraulic diaphragm metering pump with diaphragm protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201884250U true CN201884250U (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202195088U Expired - Lifetime CN201884250U (en) | 2010-06-08 | 2010-06-08 | Hydraulic diaphragm metering pump with diaphragm protection function |
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| Country | Link |
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| CN (1) | CN201884250U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511231A (en) * | 2013-09-25 | 2014-01-15 | 浙江力聚热水机有限公司 | Diaphragm pump head |
| CN107575366A (en) * | 2017-10-20 | 2018-01-12 | 项达章 | A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function |
-
2010
- 2010-06-08 CN CN2010202195088U patent/CN201884250U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511231A (en) * | 2013-09-25 | 2014-01-15 | 浙江力聚热水机有限公司 | Diaphragm pump head |
| CN107575366A (en) * | 2017-10-20 | 2018-01-12 | 项达章 | A kind of Hydraulic Diaphragm Metering Pump with diaphragm protection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 310018 Hangzhou City, Zhejiang Province Economic and Technological Development Zone No. 20, No. 658 Depam Street (Hangzhou) Pump Technology Co. Ltd. Patentee after: Depamu (Hangzhou) Pump Technology Co., Ltd. Address before: 310018, Zhejiang, Hangzhou economic and Technological Development Zone, No. 3, No. 3, 3 Avenue (Hangzhou) Pump Technology Co., Ltd., Hangzhou Patentee before: Depamu (Hangzhou) Pump Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |